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@@ -0,0 +1,55 @@
+/*
+ * LZMA compressed kernel decompressor for bcm947xx boards
+ *
+ * Copyright (C) 2005 by Oleg I. Vdovikin <oleg@cs.msu.su>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+The code is intended to decompress kernel, being compressed using lzma utility
+build using 7zip LZMA SDK. This utility is located in the LZMA_Alone directory
+
+decompressor code expects that your .trx file consist of three partitions:
+
+1) decompressor itself (this is gziped code which pmon/cfe will extract and run
+on boot-up instead of real kernel)
+2) LZMA compressed kernel (both streamed and regular modes are supported now)
+3) Root filesystem
+
+Please be sure to apply the following patch for use this new trx layout (it will
+allow using both new and old trx files for root filesystem lookup code)
+
+--- linuz/arch/mips/brcm-boards/bcm947xx/setup.c 2005-01-23 19:24:27.503322896 +0300
++++ linux/arch/mips/brcm-boards/bcm947xx/setup.c 2005-01-23 19:29:05.237100944 +0300
+@@ -221,7 +221,9 @@
+ /* Try looking at TRX header for rootfs offset */
+ if (le32_to_cpu(trx->magic) == TRX_MAGIC) {
+ bcm947xx_parts[1].offset = off;
+- if (le32_to_cpu(trx->offsets[1]) > off)
++ if (le32_to_cpu(trx->offsets[2]) > off)
++ off = le32_to_cpu(trx->offsets[2]);
++ else if (le32_to_cpu(trx->offsets[1]) > off)
+ off = le32_to_cpu(trx->offsets[1]);
+ continue;
+ }
+
+
+Revision history:
+ 0.02 Initial release
+ 0.03 Added Mineharu Takahara <mtakahar@yahoo.com> patch to pass actual
+ output size to decoder (stream mode compressed input is not
+ a requirement anymore)
+ 0.04 Reordered functions using lds script